Lens mount



0R 2,141,317 Search Room Dec. 27, 1938. J c. sABEL 2,141,317 7* f, e Lf LENS MOUNT l Filed Feb. s, 1957 K ff vk., 1V)

i l( 24 2.4 E I F|G.4

--25 20 as maa 30 JOHN c sABEL.

INVENTOR. F|G.3 2g BY QQ,

ATTORNEYS UNITED STATES PATENT OFFICE LENS MOUNT John C. Sabel, Rochester, N. Y., assignor to Bausch & Lomb Optical Company, Rochester, N. Y., a corporation of New York Application February 8, 1937, Serial No. 124,561

Claims. (Cl. 88-57) The present invention relates to mounts for optical systems and more particularly to mounts which are oil and moisture proof.

One of the objects of the present invention is sition, an oil proof gasket 2'I and a diaphragm 28 having an aperture 28 are placed in proper position over the lens 23. A hole 29 is then drilled through the diaphragm 28 and through to provide a new and improved mount for optical the gasket 21 into the seating member 2| and a 5 systems which mount is both simple in assembly pin 30 locks these three against relative rotation. and construction and efficient and accurate in 'I'he rear end of the tube I0 has a reduced poruse. Another object is to provide a lens mount tion 3| upon which a ring 32 is threaded. This which is both oil and moisture proof. A further ring 32 has an inwardly extending ange 33 object is to provide a new and improved system which engages the diaphragm 28 and causes it 10 for the mounting and securing of cylindrical to compress the gasket 2l. lenses. These and other objects and advantages From the foregoing, it will be apparent that I reside in certain novel features of construction, am able to attain the objects of my invention and arrangement and combination of parts as will provide a new and improved lens mount which is if hereinafter be more fully set forth and pointed both oil and moisture proof. Various modicaout in the appended claims. tions can, of course, be made without departing Referring to the drawing: from the spirit of my invention or the scope of Fig. 1 is a vertical section of a lens mount emthe appended claims.

bodying my invention. I claim:

Fig. 2 is a horizontal section thereof. 1. In a device of the character described, a lens 20 Fig. 3 is a section taken on line 3 3 of Fig. 1'. tube having a cylindrical bore, a cylindrical seat- Fig. 4 is a fragmentary detail view of the rear ing member loosely mounted within said bore, a

lens seating member. cylindrical lens carried by said seating member, A preferred embodiment of my invention is said member having a deep slot adjacent one edge l5 illustrated in the drawing wherein I0 designates thereof and perpendicular to the cylinder axis 25 a lens tube which is closed at one end by a plate of said lens, and a screw threaded into said I I. The plate |I has a central aperture I2 in member at said slot and having a tapered head which the spherical lens I3 is secured as by the engaging the sides of said slot to spread it so spun or burnished rim I4. The lens I3 thus spun that the member will tightly engage the bore.

or burnished into the aperture I2 forms an oil 2. A lens mount of the type described compris- 30 and moisture proof closure therefor. ing a lens tube, an apertured frontwall secured A second tube I5 is slidable Within the tube I0 on said tube, a lens secured in the aperture of and has at its forward end a lens seat I'G Within said front Wall in oil tight relation thereto, a which is seated a cylindrical lens II. A diasecond lens tube telescopically mounted within phragm plate I8 having an aperture I8 is placed the first-named tube, a lens carried by said sec- 35 over`the forward end of the tube I5 and a lock ond tube, means for clamping said second tube ring I9 threaded into the tube I0 forces the tube in predetermined position, a lens seating mem- |5 toward the plate I I thus locking the lens I'I ber mounted in the rear end of the first lens tube, and diaphragm plate I8 in position. a lens in said seating member, means carried by The rear end 0f the tube le has a Short; Cylinsaid member for clamping the member in ad- 40 drical bore 20 for receiving the lens seating disk justed DOSitiOn, an Oil proof gasket and 2 Clamp- 2I. The lens seating member or disk2| is providing ring threaded 01'1 the Outside 0f the flfslf ed with a seat 22 for receiving a, cy1indrica1 lens named tube for pressing Said gasket against sald 23 and also has a deep slot 24 adjacent one edge. member and Said tube- 15 A screw 25 having a tapered head 26 is threaded 3. In a device of the character described, a rst 45 into the member or disk 2| at the sion 24 in such Iens tube, an apertured plate Xed et the front a way that the head 26 will spread the sides of end of sai-d tube, a lens mounted 1n the aperture the slot 24 to cause a tight frictional engagement of said plate, a SeCOnd lens tube Slldably mounted between the member or disk 2| and the sides 0f in said first lens tube, a second lens mounted in the bore 20. This mechanism for securing the Said SeCOnd leIlS tube, a diaphragm plate between 50 seating member 2| avoids any tendency toward the second lens tube and said front plate, means turning the member 2| and lens 23 as would be for forcing said second lens tube toward said the case if a threaded lock ring were used. front plate, a lens seat secured in the rear end of After the cylindrical lens 23 has been properly said first lens tube, a third lens in said seat, an oriented andthe seating member 2| locked in pooil proof gasket overlying the end of said first 65 tube, the face of said lens seat and a portion of the face of said third lens, a second diaphragm plate substantially coextensive with said gasket and a ringr threaded on said rst tube and having an internal flange engaging the second diaphragm plate to cause said plate to compress said gasket.

4. A lens mount comprising a tube having a cylindrical bore, a cylindrical seating member loosely mounted within said bore coaxially therewith, a lens carried by said seating member, said member having a deep slot adjacent one edge and substantially parallel to the axis of the bore and means for spreading the edges of said slot to cause said member to engage the inner wall oi' the bore.

5. A lens mount comprising a tube having a cylindrical bore, a cylindrical seating member loosely mounted in said bore coaxially therewith, a cylindrical lens, means for mounting said cylindrical lens on said member with its axis substantially perpendicular to the axis of the bore, said member having a deep slot adjacent one edge and substantially parallel to the axis of said bore 10 and means for spreading the edges of said slot to force the member into frictional engagement with the inner Wall of the bore.

JOHN C. SABEL. 

